<div class="iPageHtml">
    <ul>
        <li>
            <a href="javascript:void(0);" onclick="javascript:showpage(3)" class="pagebtn">上一页</a>
        </li>
        <li class="active">
            <a href="javascript:void(0);">1</a>
        </li>
        <li>
            <a href="javascript:void(0);" onclick="showpage(2)">2</a>
        </li>
        <li>
            <a href="javascript:void(0);" onclick="showpage(3)">3</a>
        </li>
        <li>
            <a href="javascript:void(0);" onclick="javascript:showpage(2)" class="pagebtn">下一页</a>
        </li>
    </ul>
</div>